Compatibility:
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Yamaha: CYGNUS GRYPHUS / BWS (ZUMA) / X-FORCE
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Yamaha: N-MAX 155 / AEROX 155 / NVX 155
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Yamaha: R-15 V3 / R-15 V4
Unlock higher engine speeds and faster response with the KOSO Titanium Valve Spring Retainers (MR073000). Designed for high-performance builds, these retainers drastically reduce valve train mass to prevent valve float at critical RPMs.
Key Performance Benefits
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Extreme Weight Reduction: Weighing only 2.6g (approx.) compared to the OEM 5.3g, achieving a 49% weight reduction.
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High-RPM Stability: Lighter mass reduces inertia, ensuring precise valve control and preventing dangerous valve float (bounce) during high-speed operation.
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Superior Material: Crafted from high-strength Titanium Alloy, offering the perfect balance of durability and lightweight performance.
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Improved Response: Less moving mass means your engine can rev freer and respond faster to throttle inputs.
Why Upgrade?
For modified engines or stock engines pushed to the limit, heavy steel retainers limit potential. KOSO Titanium Retainers provide the reliability needed for racing and aggressive riding.
Price is set (4PCS)
Made In Taiwan